medInria is a free medical imaging software developed at Inria, which aims at
providing clinicians with state-of-the-art algorithms dedicated to medical image
processing and visualization. Efforts have been made to simplify the user
interface, while keeping high-level algorithms. In this particular article,
we will concentrate on its use in preoperative preparation for cardiac
interventions, and how we handle the difficulties arising from the lack of standard
format for data types such as meshes or fibers, the absence of a common
programming interface for data processing algorithms, notably registration, and
the issues of visualisation where display conventions would be beneficial.